Bent section structure of spillway discharge chute

Abstract

The invention relates to the field of discharge chutes, and provides a bent section structure of a spillway discharge chute. The bent section structure comprises at least one buffer section and at least one contraction section, and the buffer sections and the contraction sections are arranged at intervals and are in smooth connection; and the section widths of the buffer sections are equal, and the section width of the contraction section in the midstream is smaller than the section widths of the contraction sections in the upstream and the downstream. The bent section structure of the spillway discharge chute is suitable for a bent shoreside type spillway, after water flow enters the contraction section, due to the fact that the section width of the contraction section in the midstream is smaller than the section widths of and the section width of the contraction sections in the upstream and the downstream, restraining force is applied to the water flow through the contraction section, and the water flow is gathered in the center line direction firstly, and after flowing through the midstream, lateral flow is gradually generated under the action of gravity to realize redistribution, so that the water flow in the discharge chute is more uniform, and the flow state of the water flow in the discharge chute is improved.

Description

technical field [0001] The invention relates to the field of discharge troughs, in particular to a bend section structure of a spillway discharge chute. Background technique [0002] The spillway is an important part of the water conservancy and hydropower project, generally including the water inlet section, the control section, the discharge channel section, the energy dissipation section and the water outlet section. The trough section is the connecting part of the control section and the energy dissipation and anti-scour facility section, and its working characteristics are large drop, steep longitudinal slope, and rapid water flow. Therefore, in the plane layout, the chute is required to be as straight, equal in width and symmetrical as possible, so as to avoid and reduce the disturbance of the water flow by the shock wave of the water flow. However, in actual engineering, due to the constraints of terrain and geology, it is often necessary to set a bend in the chute s...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem of uneven distribution of water flow caused by transverse shock waves in the dis

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